knowles



UNITED STATES PATENT OFFICE.

LUOIUS J. KNOWLES, OF WORCESTER, MASSACHUSETTS.

LOOM.

SPECIFICATION forming part of Letters Patent No. 272,062, dated February 18, 1883,

" Application filed May '1, 1881. (ModeL) To all whom it may concern:

Be it known that I, LUCIUS J. KNOWLES, of the city and county of Worcester, State of Massachusetts, have invented certain new and 5 useful Improvements in Looms; and I do hereby declare that thefollowingis a full, clear, and exact description of the same, referencp being bad to the accompanying drawings, forming a part of this specification, in.

IQ Which Figure 1 represents the rear part of so much of a power-loom as is necessary to illustrate my invention. Figs. 2, 3,and 4 represent sections and parts of the devices and mechanism [5 represented in Fig. l of the drawings, as will be hereinafter more fully described, Fig. 2 being a section on line D of Fig.1 with the yarmbeam removed, Fig. 3 a top or plan view of the parts shown in Fig. 2, and Fig. 4a sec- 26 tion on line A B of Fig. 1.

The invention consists in the combination, with friction-plates for receiving and supporting the heads of the yarn-beammfmechanism for supporting and adjusting the shaft or 2 journals of the yarn-beam to regulate the amount of friction between the heads of the yarn-beam and said plates, as hereinafter described and claimed.

In the drawings, the parts marked E repre- 0 sent the loom-frame, which may be made in the usual manner.

K represents the yarn-beam, provided with grooved metallic heads L L; and L" L represent the shaft or journals of said beam, which journals or supporting shaft or spindle, in addition to the curved supports 0 in the sides of the frame E, have an inner set of adjustable bearings, 01 d,- and thesebearing-pieces are provided with slots e, whereby they can be adjusted up and down by means of adjustingscrewsf, which pass through lugs 9 upon the pieces M, fastened to the cross-piece E and to the frame E, as fully indicated in the figures of the drawings.

N are curved stationary friction-surfaces, which are so made and arranged that they will fit intothe grooves h of the heads L of the yarn-beam K, whereby, by means of adj ustable bearing-pieces d, the friction between the heads L of yarn-beam K and the curved friction-surfaces N can be very delicately and accurately adjusted, and when once adjusted, screws 1, which pass through slots 2, being tightened up, the parts are not liable to be displaced. Gonsequentlyaverydesirablefriction h is obtained. It will be observed that the curved friction-surfaces N are supported upon slotted stands N, which are secured to the cross-piece E by means of screws 2, whereby said friction-surfaces can be adjusted laterally, if occasionrequires.

. Having now'described my invention, what I claim, and desire to secure by Letters Patent,

LUCIUS J. KNOWLES.

Witnesses:

H. H. MERRIAM, EDWIN E. MooRE. 

